Could M-Dimensional Time Change Our Understanding of Spacetime?

[goldeng8]

The idea of 3,4,...11 dimensional spacetime has been around for a while.

This always means (N-1)-dimensional space, with the usual addition of time as one dimensional.

Are there any serious thoughts on the possibility of M-dimensional time, and what this would mean in the physical world?

(Maybe this is somewhat of a parallel discussion to the earlier post of 'imaginary time' here, but I decided to start a new thread anyway)

 

[MathematicalPhysicist]

F theory

there's a theory that adds another time dimension and it's called f theory.
the developer of theory is cumrun vafa.

 

[quartodeciman]

Here is something to contemplate.

The four dimensions of basic relativity are ct, x, y, z. Though often called one time dimension and three space dimensions, in fact, 'ct' is a space dimension (speed times time). A famous relativity space invariant equation is

s² = - (ct)² + x² + y² + z²

Now represent this by substituting uniform variable names from

x₀ <== ct
x₁ <== x
x₂ <== y
x₃ <== z

Here is the result.

s² = - x₀² + x₁² + x₂² + x₃²

Every term is a space term.

But it can all be rewritten in time dimensions.

&TAU <== is/c
t₀ <== t
t₁ <== x/c
t₂ <== y/c
t₃ <== z/c

The result.

&TAU² = + t₀² - t₁² - t₂² - t₃²

This is a relativity time invariant equation using four time dimensions.

 

[Doctor Luz]

This has few to be with the subject however, when I was 'studiying' Quantum Mechanics, one day my teacher told (looking at me when I was about to fall asleep) that the time was not a dimension, it was a parameter. I never understood what he was talking about that day.

 

[Tyger]

Originally posted by Doctor Luz
This has few to be with the subject however, when I was 'studiying' Quantum Mechanics, one day my teacher told (looking at me when I was about to fall asleep) that the time was not a dimension, it was a parameter. I never understood what he was talking about that day.

Your teacher was right. Space has three degrees of freedom, that is what a dimension is, a degree of freedom. But you can't move around in time the same way, if you move around in space a lot you change your movement in time some, but bsically you move through time at the same rate, whether you want to or not.